Of the seven constituency results that was announced for the National Assembly seats, Zanu-PF received six and the MDC Alliance one seat.
The Electoral Commission chairperson Priscilla Chigumba told reporters at Rainbow Hotel, the Harmonised Election Result Center in Harare that vote counting was complete in most provinces.
Chigumba said the presidential results will only be announced after all the results have been received and collated.
As well as electing a president, Zimbabweans were voting for 210 members of parliament and more than 9,000 councillors.
ZEC chief Priscilla Chigumba said the presidential result may not be ready until Saturday.
The poll is a two-horse race between 75-year-old Mnangagwa, a long-serving security chief who took over after Mugabe’s removal, and 40-year-old MDC leader Nelson Chamisa.
Both men have expressed confidence in victory although Western diplomats and local observer groups said the race, which saw a turnout of 75 percent, was too close to call.